60% (1976)

61% (1995)

69% (1982)

45% (1985)

67% (2003)

58% (1984)

51% (1996)

50% (1996)

50% (1987)

50% (1988)

54% (1980)

62% (1979)

67% (1995)

45% (1978)

50% (1994)

78% (1987)

57% (1998)

0% (1980)

56% (1987)

10% (1980)